MICRODENSITOMETER FOR PHOTOGRAPHIC RESEARCH

[1] GUNDERSON NR, 1948, Patent No. 2454871

[2] HARDY AC, 1932, PRINCIPLES OPTICS, P498

[3] JAMES TH, 1948, FUNDAMENTALS PHOTOGR, P168

[4] SAWYER RA, 1951, EXPERIMENTAL SPECTRO, P285

[5] On the disrtibution of brightness of the ultra-violet light on the Sun's disk [J]. ASTROPHYSICAL JOURNAL, 1906, 23 (04) : 284 - 305

[6] STONE W, 1934, J SCI INSTR, V11, P1

[1] GUNDERSON NR, 1948, Patent No. 2454871

[2] HARDY AC, 1932, PRINCIPLES OPTICS, P498

[3] JAMES TH, 1948, FUNDAMENTALS PHOTOGR, P168

[4] SAWYER RA, 1951, EXPERIMENTAL SPECTRO, P285

[5] On the disrtibution of brightness of the ultra-violet light on the Sun's disk [J]. ASTROPHYSICAL JOURNAL, 1906, 23 (04) : 284 - 305

[6] STONE W, 1934, J SCI INSTR, V11, P1